Please expand a bit on your question. Not sure if you are asking about how to make a "collage" out of several photos.

A collage: 1 a: an artistic composition made of various materials (as paper, cloth, or wood) glued on a surface b: a creative work that resembles such a composition in incorporating various materials or elements 1 a: an artistic composition made of various materials (as paper, cloth, or wood) glued on a surface b: a creative work that resembles such a composition in incorporating various materials or elements